Description

Returns an array that corresponds to the fetched row or NULL if there
are no more rows for the resultset represented by the
result parameter.

mysqli_fetch_array() is an extended version of the
mysqli_fetch_row() function. In addition to storing the
data in the numeric indices of the result array, the
mysqli_fetch_array() function can also store the data
in associative indices, using the field names of the result set as keys.

Note: Field names returned by this function
are case-sensitive.

Note: This function sets NULL fields to
the PHP NULL value.

If two or more columns of the result have the same field names, the last
column will take precedence and overwrite the earlier data. In order to
access multiple columns with the same name, the numerically indexed
version of the row must be used.

Parameters

This optional parameter is a constant indicating what type of array
should be produced from the current row data. The possible values for
this parameter are the constants MYSQLI_ASSOC,
MYSQLI_NUM, or MYSQLI_BOTH.

By using the MYSQLI_ASSOC constant this function
will behave identically to the mysqli_fetch_assoc(),
while MYSQLI_NUM will behave identically to the
mysqli_fetch_row() function. The final option
MYSQLI_BOTH will create a single array with the
attributes of both.

Return Values

Returns an array of strings that corresponds to the fetched row or NULL if there
are no more rows in resultset.

Please note that under PHP 5.x there appears to be a globally defined variable MYSQL_ASSOC, MYSQL_NUM, or MYSQL_BOTH which is the equivalent of MYSQLI_ASSOC, MYSQLI_NUM, or MYSQLI_BOTH!!! Yet under PHP 7.x this is NOT the case and will cause a failure in trying to retrieve the result set!

This can cause severe headaches when trying to find out why you are getting the error: - mysqli_result::fetch_array() expects parameter 1 to be integer, string given in 'Filename' on line 'XX'

$pointer[$key_val] = ""; // Start a new node$pointer = & $pointer[$key_val]; // Move the pointer on to the new node} else {$pointer = & $pointer[$key_val]; // Already exists, move the pointer on to the new node}

} // for $i

// At this point, $pointer should be at the furthest point on the tree of keys // Now we can go through all the columns and place their values on the tree // For ease of use, include the index keys and their values at this point too